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I am trying to use
cURL
to automatic login into this site:
GSC
. The site is build using ASP.NET. I first perform a GET request to get session id, which works just fine. I then need to person a POST request to the same site with session id, username, password and some login position. The login position changes based on the window size of the browser, so I just choose some random ones. I've left of the username and password below, but I've checked them several times and the are correct. In Chrome I can see that there is also a query string parameter, but I'm not sure If I should include this anywhere? I've included two pictures the request + response I made manually in a Chrome Browser and the php script I'm using for the automatic login. Can anybody see, if I made any errors?
Request + response:
// Split the string on every "double" new line.
$arrRequests = explode("\r\n\r\n", $headerContent);
// Loop of response headers. The "count() -1" is to
//avoid an empty row for the extra line break before the body of the response.
for ($index = 0; $index < count($arrRequests) -1; $index++) {
foreach (explode("\r\n", $arrRequests[$index]) as $i => $line)
if ($i === 0)
$headers[$index]['http_code'] = $line;
list ($key, $value) = explode(': ', $line);
$headers[$index][$key] = $value;
return $headers;
function regexExtract($text, $regex, $regs, $nthValue)
if (preg_match($regex, $text, $regs)) {
$result = $regs[$nthValue];
else {
$result = "";
return $result;
$regexViewstate = '/__VIEWSTATE\" value=\"(.*)\"/i';
$regexEventVal = '/__EVENTVALIDATION\" value=\"(.*)\"/i';
$ch = curl_init("http://gsc.klub-modul.dk/cms/ShowContentPage.aspx?ContentPageID=1");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
$response = curl_exec($ch);
curl_close($ch);
$viewstate = regexExtract($response,$regexViewstate,$regs,1);
$eventval = regexExtract($response, $regexEventVal,$regs,1);
$params = array(
'__EVENTTARGET' => '',
'__EVENTARGUMENT' => '',
'__VIEWSTATE' => $viewstate,
'__EVENTVALIDATION' => $eventval,
'ctl00%24txtUsername' => 'xxx',
'ctl00%24txtPassword' => 'xxx',
'ctl00$ImgLogin.x' => '0',
'ctl00$ImgLogin.y' => '0',
$ch2 = curl_init("http://gsc.klub-modul.dk/cms/ShowContentPage.aspx?ContentPageID=1");
curl_setopt($ch2, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch2, CURLOPT_HEADER, 1);
curl_setopt ($ch2, CURLOPT_POST, true);
curl_setopt($ch2, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch2, CURLOPT_POSTFIELDS, http_build_query($params));
curl_setopt ($ch2, CURLOPT_COOKIE,'cookies.txt');
curl_setopt($ch2,CURLOPT_COOKIEJAR,'cookies2.txt');
$response2 = curl_exec($ch2);
curl_close($ch2);
foreach(get_headers_from_curl_response($response2) as $value)
foreach($value as $key => $value2)
echo $key . ": " .$value2 . "<br />";
Your code looks clean to me, unless you didn't make any mistake elsewhere. Just one thing you need to fix:
'ctl00$txtUsername' => 'xxx',
'ctl00$txtPassword' => 'xxx',
You are using %24 inside the keys, which further urlencoded by the function http_build_query()
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